BACKGROUND: The diagnosis and treatment of indeterminate dominant strictures (DS) in patients with primary sclerosing cholangitis (PSC) is challenging and the literature on the subject is scarce. OBJECTIVES: This review aims to appraise and synthesize the evidence published in the English-language medical literature on this topic. METHODS: Scientific papers published from 1950 until week 4 of July 2010 were extracted from MEDLINE, Ovid Medline In-Process, the Cochrane Database of Systematic Reviews, the Database of Systematic Reviews, the Database of Abstracts of Reviews of Effects, EMBASE, PubMed and the National Library of Medicine Gateway. RESULTS: Strategies for the optimal management of DS in PSC patients are supported only by level II and III evidence. Intraductal endoscopic ultrasound appears to be the most sensitive (64%) and specific (95%) diagnostic test for the evaluation of DS in PSC. Endoscopic and percutaneous dilatations achieve 1- and 3-year palliation in 80% and 60% of patients, respectively. Although dilatation and stenting are the most common palliative interventions in DS, no randomized trials on the optimal duration of treatment have been conducted. CONCLUSIONS: In benign DS, endoscopic dilatation with short-term stenting seems to be effective and safe and does not increase the risks for malignant transformation or complications after liver transplantation. Surgical bile duct resection and/or bilioenteric bypass are indicated only in patients with preserved liver function.
BACKGROUND: The diagnosis and treatment of indeterminate dominant strictures (DS) in patients with primary sclerosing cholangitis (PSC) is challenging and the literature on the subject is scarce. OBJECTIVES: This review aims to appraise and synthesize the evidence published in the English-language medical literature on this topic. METHODS: Scientific papers published from 1950 until week 4 of July 2010 were extracted from MEDLINE, Ovid Medline In-Process, the Cochrane Database of Systematic Reviews, the Database of Systematic Reviews, the Database of Abstracts of Reviews of Effects, EMBASE, PubMed and the National Library of Medicine Gateway. RESULTS: Strategies for the optimal management of DS in PSC patients are supported only by level II and III evidence. Intraductal endoscopic ultrasound appears to be the most sensitive (64%) and specific (95%) diagnostic test for the evaluation of DS in PSC. Endoscopic and percutaneous dilatations achieve 1- and 3-year palliation in 80% and 60% of patients, respectively. Although dilatation and stenting are the most common palliative interventions in DS, no randomized trials on the optimal duration of treatment have been conducted. CONCLUSIONS: In benign DS, endoscopic dilatation with short-term stenting seems to be effective and safe and does not increase the risks for malignant transformation or complications after liver transplantation. Surgical bile duct resection and/or bilioenteric bypass are indicated only in patients with preserved liver function.
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